Ziyadanogullari, BTopal, GErdogan, SHamamci, CHosgoren, H2024-04-242024-04-2420010039-9140https://doi.org/10.1016/S0039-9140(00)00553-1https://hdl.handle.net/11468/16242The solvent extraction of univalent metal cations with N,N'-dibenzyl-1,4,10,13-tetraoxa-7,16 diaza-2,3,11,12-dibenzocycloocta deca-2,11-diene (L-1), N,N'-didodecyl-1,4,10,13-tetraoxa-7,16-diaza-2,3-benzocylooctadeca-2-ene (L-2) and N,N'-dibenzyl-1,4,10,13-tetraoxa-7,16-diaza-2,3,11,12-dibenzocyclo octadeca-2,11-diene (L-3) with picrate anion into dichloromethane has been studied at 25 degreesC by UV-visible spectroscopy. The extractability and selectivity of univalent metal picrates (Li+, Na+, Ag+, PhCH2NH3+, NH4+) was evaluated as a function of [ligand]/[metal cation]. L-2 showed the highest extractability and selectivity for Lit over the larger studied cations, and also exhibited the highest [Li+]/[NH4+] selectivity as L/M = 1. (C) 2001 Elsevier Science B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccessDiazacrown EtherSelective ExtractionUnivalent Cation PicratePicrate ExtractionArticle53510831087WOS:0001666864000212-s2.0-00359515431896820010.1016/S0039-9140(00)00553-1Q1Q2